Nervous Systems Review

Central Nervous System (CNS) • brain • spinal cord

Peripheral Nervous System (PNS) • Somatic (sensory & motor)

• Autonomic (afferent & efferent) a) sympathetic b) parasympathetic

Enteric NS

The Nervous Systems

+ Sensory nerves +

+ Afferentnerves to CNS

Neural Connection

Saltatory conduction

EPSP -axodendriticIPSPaxosomatic

Neural Transmission

Saltatory propagation

1. Concentration2. Electrical3. Na+, K+ pumps

Na+ inK+ out

Ions:

Neural Transmission at the Synapse

Retrograde messenger

Autoreceptors

Ca++

Fusion pore

Mid -sagittal Section

Pituitary

DA, NE, 5HT

RF

autonomic

(neo~, paleo~, archi~)

Telencephalon

• Limbic system: amygdala, septum (subcortical), hippocampus (archicortex), cingulate gyrus (paleocortex): subcortical & cortical extension of hypothalamus; Kluver-Bucy, Papez-MacLean

• Basal Ganglia: n. accumbens, striatum (caudate &

putamen)• Neocortex: frontal, parietal, temporal, occipital lobes